[#4054] make the operationConfig lazy to load

[yanghao605]

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (9695b5b) 74.16% compared to head (aeced9a) 74.15%.

❗ Current head aeced9a differs from pull request most recent head 532af16. Consider uploading reports for the commit 532af16 to get more accurate results

Additional details and impacted files

@@             Coverage Diff              @@
##              2.8.x    #4109      +/-   ##
============================================
- Coverage     74.16%   74.15%   -0.01%     
+ Complexity      707      706       -1     
============================================
  Files          1594     1594              
  Lines         40154    40153       -1     
  Branches       3660     3660              
============================================
- Hits          29779    29777       -2     
- Misses         8888     8889       +1     
  Partials       1487     1487              

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